4020847686 has 48 divisors (see below), whose sum is σ = 8871442944. Its totient is φ = 1315948032.

The previous prime is 4020847679. The next prime is 4020847687. The reversal of 4020847686 is 6867480204.

4020847686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×4020847686² = 32334432228023109192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020847687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212676 + ... + 230808.

It is an arithmetic number, because the mean of its divisors is an integer number (184821728).

Almost surely, 2^4020847686 is an apocalyptic number.

4020847686 is an abundant number, since it is smaller than the sum of its proper divisors (4850595258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020847686 is a wasteful number, since it uses less digits than its factorization.

4020847686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18365 (or 18362 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 4020847686 is about 63410.1544391748. The cubic root of 4020847686 is about 1590.1540778657.

The spelling of 4020847686 in words is "four billion, twenty million, eight hundred forty-seven thousand, six hundred eighty-six".